EP0797456A1 - Antitumormittel, enthaltend ein zytostatikum und ein kontrastmittel - Google Patents
Antitumormittel, enthaltend ein zytostatikum und ein kontrastmittelInfo
- Publication number
- EP0797456A1 EP0797456A1 EP95905016A EP95905016A EP0797456A1 EP 0797456 A1 EP0797456 A1 EP 0797456A1 EP 95905016 A EP95905016 A EP 95905016A EP 95905016 A EP95905016 A EP 95905016A EP 0797456 A1 EP0797456 A1 EP 0797456A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- agent
- cytostatic
- starch particles
- iodine
- lyophilized
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/24—Heavy metals; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K49/00—Preparations for testing in vivo
- A61K49/06—Nuclear magnetic resonance [NMR] contrast preparations; Magnetic resonance imaging [MRI] contrast preparations
- A61K49/18—Nuclear magnetic resonance [NMR] contrast preparations; Magnetic resonance imaging [MRI] contrast preparations characterised by a special physical form, e.g. emulsions, microcapsules, liposomes
- A61K49/1818—Nuclear magnetic resonance [NMR] contrast preparations; Magnetic resonance imaging [MRI] contrast preparations characterised by a special physical form, e.g. emulsions, microcapsules, liposomes particles, e.g. uncoated or non-functionalised microparticles or nanoparticles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/28—Compounds containing heavy metals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/24—Heavy metals; Compounds thereof
- A61K33/243—Platinum; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/69—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit
- A61K47/6921—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere
- A61K47/6927—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere the form being a solid microparticle having no hollow or gas-filled cores
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K49/00—Preparations for testing in vivo
- A61K49/04—X-ray contrast preparations
- A61K49/0433—X-ray contrast preparations containing an organic halogenated X-ray contrast-enhancing agent
- A61K49/0447—Physical forms of mixtures of two different X-ray contrast-enhancing agents, containing at least one X-ray contrast-enhancing agent which is a halogenated organic compound
- A61K49/0476—Particles, beads, capsules, spheres
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
Definitions
- Ant1tumorrn1ttel containing a cytostatic and a contrast agent description
- the invention relates to an agent for antitumor therapy, its production and its use, in particular for the therapy of non-resectable primary and secondary liver tumors.
- Fields of application of the invention are medicine and the pharmaceutical industry.
- cytostatics In anti-tumor therapy of non-resectable liver tumors, the regional application of cytostatics in conjunction with flow-retarding substances to increase the local cytostatic concentration on the tumor has proven to be useful.
- the aim here is to achieve the above-described effects on the tumor and at the same time to minimize the systemic side effects. This principle has been implemented in chemoembolization for years.
- the indirect method has the disadvantage that a retrograde outflow of the cytostatic-embolic acid mixture is not always noticed, which can lead to dangerous complications (eg gastrointestinal necrosis). Applicability in facilities with simple X-ray equipment is therefore only possible to a limited extent.
- the aim of the invention is to avoid the disadvantages occurring in the chemoembolization of tumors. It is based on the task of developing an optimal embolisate that not only shows the effect caused by the respective vascular structure of the tumor, but can also be directly and reliably displayed in tumor monitoring.
- the agent according to the invention is through
- the essential component of the agent are the lyophilized starch particles. Particles of size 40-90 ⁇ m are particularly suitable; they are dissolved in physiological saline up to a concentration of 50-70 mg / ml and then lyophilized in a manner known per se.
- cytostatics can be used as cytostatics.
- Carboplatin which is also mixed in lyophilized form with the lyophilized starch.
- Liquid iodine-containing compounds preferably mono- or poly-iodinated phenyl derivatives, are used as iodine-containing contrast media.
- iodine-containing contrast media are u. a. Iopro id, Ioxitalamat, Ioxaglat, Iopa idol, Iohexol, Iotralon, Metrizamid or Ultravist.
- the contrast medium also serves as a solvent for the mixture of the lyophilisates.
- Magnetic resonance imaging uses either gadolinium or magnetite-based contrast agents.
- the components are preferably contained on average in the following proportions: 30-90 mg of lyophilized starch particles are mixed with the required amounts of cytostatic agent and subsequently dissolved in 3-6 ml of contrast medium.
- the specified amount of the lyophilized starch particles can also first be dissolved in the contrast medium and then the therapeutically necessary amount of cytostatic agent added.
- lyophilized starch particles preferably based on the commercial embolisate from Kabi-Pharmazia "Spherex”. This product is dialyzed in a dialysis tube against sterile Aqua bidest for 36 hours with triple water changes. The material is then removed from the dialysis tube with a sterile pipette and frozen in a sterile plastic container at -70 ° C. The cold container is placed in the freeze dryer and dried in a high vacuum for 24 hours.
- an embolizate for tumor therapy depend on the vascular structure of the tumor, ie the particles should be of a suitable size in order to reach the tumor by embolizing as peripheral parts of the tumor vessel bed as possible, including the cytostatic agent.
- the optimal particle size for this is between 40 and 90 ⁇ m.
- An upward deviation from the above-mentioned size causes a stasis of the tumor vessels, so that the cytostatic does not reach the tumor in an optimally high concentration. This is due to a peripheral blood flow via the opening of the arteriovenous shunts and the associated thinning effect for the cytostatic.
- An even smaller particle size can lead to multiple systemic embolizations, for example pulmonary embolism.
- the starch particles lyophilized according to the invention have an embolization time of between 20 and 60 minutes. Interval therapy with this short-acting embolizate has proven to be advantageous over long-acting embolizate.
- Desarterialization (Bengmark, etc.) leads to a rapid onset of angioproliferative effects, so that neovascularization of the tumor takes place within 48 hours, making a new therapeutic approach more difficult.
- Similar effects can also be seen in the use of long-acting embolisates with thrombosis of the supplying tumor vessels and tumor vessel connection to, for example, the diaphragm, large network, etc., which limit further therapy.
- the following advantages are associated with the new agent and its application
- the animals were sacrificed at the specified times (15, 30, 60, 120, 240 min) and the cytostatic concentration in various tissues (tumor, liver, spleen, kidney, serum) was determined analytically using atomic absorption spectroscopy, and the concentration of the cytostatic in the tumor tissue was increased by a factor of 20.
- the application of the newly developed agent could be observed directly under X-ray examination without any problems represents the gradual saturation of the tumor vascular bed with standing images from the periphery to the vascular trunk over the entire phase of the embolization and was traceable as a standing image during the entire duration of the vascular occlusion. The onset of reperfusion was also documented.
Landscapes
- Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Nanotechnology (AREA)
- Radiology & Medical Imaging (AREA)
- General Chemical & Material Sciences (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Medicinal Preparation (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4341478A DE4341478C2 (de) | 1993-12-02 | 1993-12-02 | Mittel zur Antitumortherapie |
PCT/DE1994/001524 WO1996018421A1 (de) | 1993-12-02 | 1994-12-16 | Antitumormittel, enthaltend ein zytostatikum und ein kontrastmittel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0797456A1 true EP0797456A1 (de) | 1997-10-01 |
EP0797456B1 EP0797456B1 (de) | 2007-02-21 |
Family
ID=25931804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95905016A Expired - Lifetime EP0797456B1 (de) | 1993-12-02 | 1994-12-16 | Antitumormittel, enthaltend ein zytostatikum und ein kontrastmittel |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0797456B1 (de) |
DE (1) | DE4341478C2 (de) |
WO (1) | WO1996018421A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4341478C2 (de) * | 1993-12-02 | 1998-10-08 | Max Delbrueck Centrum | Mittel zur Antitumortherapie |
ATE354377T1 (de) * | 1993-12-02 | 2007-03-15 | Max Delbrueck Centrum | Antitumormittel, enthaltend ein zytostatikum und ein kontrastmittel |
KR970069028A (ko) * | 1996-04-01 | 1997-11-07 | 김은영 | 화학색전용 에멀젼의 제조방법 |
WO1998044910A1 (en) | 1997-04-09 | 1998-10-15 | Philipp Lang | NEW TECHNIQUE TO MONITOR DRUG DELIVERY NONINVASIVELY $i(IN VIVO) |
CA2288292A1 (en) * | 1997-04-24 | 1998-10-29 | Nycomed Imaging As | Embolus therapy using insoluble microparticles or vesicles containing contrast agents |
DE19724796A1 (de) * | 1997-06-06 | 1998-12-10 | Max Delbrueck Centrum | Mittel zur Antitumortherapie |
DE19731591C2 (de) * | 1997-07-17 | 1999-09-16 | Schering Ag | Pharmazeutische Mittel enthaltend perfluoralkylgruppenhaltige Trijodaromaten und ihre Verwendung in der Tumortherapie und interventionellen Radiologie |
DE59810105D1 (de) * | 1997-12-12 | 2003-12-11 | Max Delbrueck Centrum | Mittel zur gentherapie von tumorerkrankungen, neurodegenerativen, herzkreislauf- und autoimmunerkrankungen |
DE10115740A1 (de) | 2001-03-26 | 2002-10-02 | Ulrich Speck | Zubereitung für die Restenoseprophylaxe |
DE10244847A1 (de) | 2002-09-20 | 2004-04-01 | Ulrich Prof. Dr. Speck | Medizinische Vorrichtung zur Arzneimittelabgabe |
GB0811856D0 (en) | 2008-06-27 | 2008-07-30 | Ucl Business Plc | Magnetic microbubbles, methods of preparing them and their uses |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0128578A1 (de) * | 1983-06-14 | 1984-12-19 | Byk Gulden Lomberg Chemische Fabrik GmbH | Ethanolische Kontrastmittelsuspensionen |
US5213788A (en) * | 1988-09-29 | 1993-05-25 | Ranney David F | Physically and chemically stabilized polyatomic clusters for magnetic resonance image and spectral enhancement |
FR2676927B1 (fr) * | 1991-05-29 | 1995-06-23 | Ibf | Microspheres utilisables pour les occlusions vasculaires therapeutiques et solutions injectables les contenant. |
DE4341478C2 (de) * | 1993-12-02 | 1998-10-08 | Max Delbrueck Centrum | Mittel zur Antitumortherapie |
-
1993
- 1993-12-02 DE DE4341478A patent/DE4341478C2/de not_active Expired - Lifetime
-
1994
- 1994-12-16 WO PCT/DE1994/001524 patent/WO1996018421A1/de active IP Right Grant
- 1994-12-16 EP EP95905016A patent/EP0797456B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9618421A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE4341478C2 (de) | 1998-10-08 |
EP0797456B1 (de) | 2007-02-21 |
WO1996018421A1 (de) | 1996-06-20 |
DE4341478A1 (de) | 1995-06-08 |
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